\documentclass[cn]{../../styles/book/elegantbook/elegantbook}
\begin{document}

\begin{introduction}
\item test 1
\begin{proof}
测试定理 \\
Test Theorem
\end{proof}
\item test 2
\begin{itemize}
\item item1
\item item2
\end{itemize}
\end{introduction}

请看定理\ref{thm:mytest}

\begin{theorem}{我的定理}{mytest}
测试定理 \\
Test Theorem
\end{theorem}

\begin{definition}{我的定理}{mytest}
测试定理 \\
Test Theorem
\end{definition}

\begin{lemma}{我的定理}{mytest}
测试定理 \\
Test Theorem
\end{lemma}

\begin{corollary}{我的定理}{mytest}
测试定理 \\
Test Theorem
\end{corollary}

\begin{proposition}{我的定理}{mytest}
测试定理 \\
Test Theorem
\end{proposition}

\begin{example}
测试定理 \\
Test Theorem
\end{example}

\begin{exercise}
测试定理 \\
Test Theorem
\end{exercise}

\begin{problem}
测试定理 \\
Test Theorem
\end{problem}

\begin{proof}
测试定理 \\
Test Theorem
\end{proof}

\begin{note}
测试定理 \\
Test Theorem
\end{note}

\begin{conclusion}
测试定理 \\
Test Theorem
\end{conclusion}


\begin{assumption}
测试定理 \\
Test Theorem
\end{assumption}

\begin{property}
测试定理 \\
Test Theorem
\end{property}

\begin{remark}
测试定理 \\
Test Theorem
\end{remark}

\begin{solution}
测试定理 \\
Test Theorem
\end{solution}

\begin{problemset}
\item test 1
\begin{solution}
this is solution
\end{solution}
\item test 2
\begin{solution}
this is solution
\end{solution}
\end{problemset}
\end{document}